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A __________ is the combination of base, a deoxyribose molecule, and a phosphate group. A. chromosome B. genome C. DNA strand D. nucleotide Reset

A __________ is the combination of base, a deoxyribose molecule, and a phosphate group.
A. chromosome
B. genome
C. DNA strand
D. nucleotide
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Question 2 of 20 5.0 Points
The molecular structure of deoxyribonucleic acid dictates:
A. the manner in which chromosomes are organized.
B. the way DNA encodes genetic information.
C. how molecules carry genetic information.
D. how chemical reactions burn food.
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Question 3 of 20 5.0 Points
In a DNA model, the alternating __________ and phosphate groups are represented on the two twisted ribbons.
A. thymine
B. guanine
C. sugar
D. cytosine
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Question 4 of 20 5.0 Points
Before a cell __________, the double helix partially and rapidly unwinds.
A. dies
B. divides
C. replicates
D. bonds
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Question 5 of 20 5.0 Points
The overall shape or conformation of the protein molecule is termed its __________ structure.
A. tertiary
B. primary
C. secondary
D. substrate
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Question 6 of 20 5.0 Points
All enzymes are:
A. sugars.
B. proteins.
C. phosphates.
D. glycogens.
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Question 7 of 20 5.0 Points
Bacteria contain rings of __________ called plasmids.
A. molecules
B. hydrocarbon
C. DNA
D. cells
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Question 8 of 20 5.0 Points
DNA __________ utilize(s) unique fragments of DNA to identify a specific individual.
A. sourcing
B. fingerprinting
C. analysis
D. probes
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Question 9 of 20 5.0 Points
__________ in cells, but not within cell nuclei, are vital to energy production.
A. Fatty acids
B. Hydrocarbons
C. Mitochondria
D. Proteins
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Question 10 of 20 5.0 Points
Before __________ there was no hepatitis B vaccine.
A. transgenic modifications
B. recombinant DNA
C. electrophoresis
D. DNA probes
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Question 11 of 20 5.0 Points
The biochemists who set out to decipher the genetic code concentrated on translating base language into __________ language.
A. codon
B. substrate
C. amino acid
D. DNA coded
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Question 12 of 20 5.0 Points
Chromosomes consist of __________ compact structures of intertwined molecules of DNA in a human cell nucleus.
A. 39
B. 46
C. 48
D. 52
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Question 13 of 20 5.0 Points
What is the totality of human hereditary information in molecular form called?
A. Chromosome
B. Human genome
C. DNA
D. RNA
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Question 14 of 20 5.0 Points
What is a nucleotide?
A. The combination of nitrogenous base, sugar, and phosphate group
B. Phosphate units
C. Deoxyribose
D. The combination of deoxyribose and a phosphate group
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Question 15 of 20 5.0 Points
Francis Crick established that genetic code was written in groupings of three DNA bases known as:
A. codons.
B. amino acid residues.
C. complementary bases
D. clonings.
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Question 16 of 20 5.0 Points
Organic polymers of amino acids linked together by peptide bonds are called:
A. proteins.
B. codons.
C. genetic codes.
D. DNA bases.
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Question 17 of 20 5.0 Points
Electrophoresis and __________ have made genetic fingerprinting a highly accurate and viable method for fighting crime.
A. x-ray diffraction
B. nuclear transfer
C. polymerase chain reaction
D. amniocentesis
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Question 18 of 20 5.0 Points
The molecule with its reaction catalyzed by an enzyme is the:
A. catalyst.
B. active site.
C. substrate.
D. coenzyme.
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Question 19 of 20 5.0 Points
Interferons are:
A. proteins that are produced by cells under viral attack.
B. genetically engineered proteins.
C. viruses that attack.
D. proteins that produce carbohydrates when they encounter a virus.
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Question 20 of 20 5.0 Points
Diabetes is more effectively treated today through the creation of insulin by:
A. sickle-cell anemia.
B. recombinant DNA.
C. polymerase chain reaction.
D. electrophoresis.


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Assign 1.docx

1. D. nucleotide. Nucleotides are organic molecules that work as sub-units of nucleic acids like
DNA and RNA. They are composed of a nitrogenous base, a sugar (deoxyribose or ribose) and a...

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